Iran will begin enriching uranium with thousands of advanced centrifuges at its two main nuclear facilities at Fordo and Natanz, the United Nations' nuclear watchdog said Friday, further raising tensions over Tehran's program as it enriches at near weapons-grade levels.

The International Atomic Energy Agency report to member states seen by Reuters made no mention, however, of Iran's enrichment to up to 60% purity, close to nuclear weapons grade. Eight new cascades, or clusters, of advanced IR-6 centrifuges at Fordow would enrich to up to 5% purity, Iran informed the IAEA.

The head of the Atomic Energy Organization of Iran (AEOI), Mohammad Eslami, has said that his country has started injecting uranium gas into its “several thousand advanced centrifuges” in response to the recent resolution passed by the UN nuclear watchdog.

Tehran has revealed its plans to expand its nuclear facilities in detail ahead of a meeting between Iranian and European diplomats in Geneva on Friday. The International Atomic Energy Agency (IAEA) announced in Vienna that Iran had informed it of plans to install several thousand additional centrifuges for uranium enrichment and also to commission thousands of centrifuges that have already been installed.

VIENNA, Nov 28 (Reuters) - Iran has informed the U.N. nuclear watchdog that it plans to install more than 6,000 extra uranium-enriching centrifuges at its enrichment plants and bring more of those already in place online, a confidential report by the watchdog said on Thursday.

Iran will begin enriching uranium with thousands of advanced centrifuges at its two main nuclear facilities at Fordo and Natanz, the United Nations’ nuclear watchdog said Friday, further raising tensions over Tehran’s program as it enriches at near weapons-grade levels.

Iran will begin enriching uranium with thousands of advanced centrifuges at its two main nuclear facilities at Fordo and Natanz, the United Nations’